{"product_id":"eg4-314ah-indoor-flexboss21-ess","title":"EG4 314Ah Indoor Battery + FlexBOSS21 | 16kWh Solar ESS","description":"\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"markdown markdown-main-panel enable-updated-hr-color\" id=\"model-response-message-contentr_d0bb87d698bf0f1c\" aria-live=\"polite\" aria-busy=\"false\" dir=\"ltr\"\u003e\n\u003cp data-path-to-node=\"7\"\u003eThe EG4 WallMount Indoor Battery ESS combined with the FlexBOSS21 hybrid inverter is a high-capacity indoor energy storage system designed for residential backup power, solar energy storage, and hybrid applications. It integrates a 48V lithium battery with a powerful inverter to provide reliable, whole-home energy in a compact and efficient setup. With approximately 16kWh of storage and a 314Ah capacity, the system is built to support daily energy consumption as well as backup during outages. Its wall-mounted indoor design allows for space-efficient installation while maintaining strong performance and reliability. This system is a leader in quality and reliability for both on-grid and off-grid solar installations.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003e\u003cb data-path-to-node=\"8\" data-index-in-node=\"0\"\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"9\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,0,0\"\u003e\u003cb data-path-to-node=\"9,0,0\" data-index-in-node=\"0\"\u003eMassive Storage Capacity:\u003c\/b\u003e Offers ~16.0–16.1kWh energy storage with a 314Ah rating.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,1,0\"\u003e\u003cb data-path-to-node=\"9,1,0\" data-index-in-node=\"0\"\u003eReliable Battery Chemistry:\u003c\/b\u003e Utilizes 51.2V LiFePO4 chemistry for superior durability and safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,2,0\"\u003e\u003cb data-path-to-node=\"9,2,0\" data-index-in-node=\"0\"\u003eHigh Power Output:\u003c\/b\u003e Features 200A continuous output with high peak power capability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,3,0\"\u003e\u003cb data-path-to-node=\"9,3,0\" data-index-in-node=\"0\"\u003eIndoor Optimized Design:\u003c\/b\u003e Space-saving indoor wall-mounted or floor-mounted installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,4,0\"\u003e\u003cb data-path-to-node=\"9,4,0\" data-index-in-node=\"0\"\u003eAdvanced Battery Management:\u003c\/b\u003e Includes a third-generation BMS with automatic configuration and protection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,5,0\"\u003e\u003cb data-path-to-node=\"9,5,0\" data-index-in-node=\"0\"\u003eClimate Resilience:\u003c\/b\u003e Integrated self-heating function for improved performance in low temperatures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,6,0\"\u003e\u003cb data-path-to-node=\"9,6,0\" data-index-in-node=\"0\"\u003eScalable Expansion:\u003c\/b\u003e Supports multiple batteries in parallel to increase storage as energy needs grow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,7,0\"\u003e\u003cb data-path-to-node=\"9,7,0\" data-index-in-node=\"0\"\u003eFlexBOSS21 Compatibility:\u003c\/b\u003e Specifically designed for seamless integration with the FlexBOSS21 hybrid inverter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,8,0\"\u003e\u003cb data-path-to-node=\"9,8,0\" data-index-in-node=\"0\"\u003eVersatile Power Applications:\u003c\/b\u003e Supports grid-tied, hybrid, and backup power applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,9,0\"\u003e\u003cb data-path-to-node=\"9,9,0\" data-index-in-node=\"0\"\u003eHigh Solar Input:\u003c\/b\u003e The FlexBOSS21 inverter optimizes solar utilization with high conversion efficiency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003ePerformance and Efficiency\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eExceptional Cycle Life:\u003c\/b\u003e The LiFePO4 battery supports long-term use with up to ~10,000 cycles at 80% depth of discharge.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eEnhanced System Output:\u003c\/b\u003e Supports up to ~12kW output without solar and up to ~16kW with solar assistance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003eThermal Stability:\u003c\/b\u003e Engineered to maintain consistent performance and strong thermal stability across different energy demands.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,3,0\"\u003e\u003cb data-path-to-node=\"11,3,0\" data-index-in-node=\"0\"\u003eSmart Communication:\u003c\/b\u003e Features intelligent communication and real-time monitoring via dedicated system protocols.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"2364\" data-end=\"2593\"\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0905\/1868\/3895\/files\/EG4-314Ah-1300x533_a3096725-8f63-4266-a7cd-7f70ea862526.png?v=1775064627\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0905\/1868\/3895\/files\/Product-Infographics-2-1300x533_a8bb12bf-0649-4ac2-8bab-b0002cbc57f7.png?v=1775064630\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eBattery Downloads\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/10\/EG4-WallMount-314Ah-Indoor-Battery-Spec-Sheet.pdf\"\u003e\u003cspan\u003eSpec Sheet\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/04\/EG4-WallMount-Indoor-314Ah-Battery-User-Manual.pdf\"\u003e\u003cspan\u003eUser Manual:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/10\/EG4-WallMount-314Ah-Indoor-Battery-Quick-Start-Guide.pdf\"\u003e\u003cspan\u003eQuick Start Guide:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/01\/EG4-WallMount-314Ah-Indoor-Battery-1973-Certificate-of-Compliance.pdf\"\u003e\u003cspan\u003eCertification of Compliance:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/01\/EG4-WallMount-314Ah-Indoor-Battery-UL-9540A-Test-Verification-of-Conformity.pdf\"\u003e\u003cspan\u003eCertification of Conformity:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInverter Downloads\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/10\/EG4-FlexBoss21-Spec-Sheet.pdf\"\u003e\u003cspan\u003eSpec Sheet:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/08\/FlexBOSS-21-Manual.pdf\"\u003e\u003cspan\u003eUser Manual:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/11\/EG4-FlexBoss21-COC.pdf\"\u003e\u003cspan\u003eUL1741 Certificate:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/11\/EG4-FlexBOSS21-UL-1741-PCS-CRD_Test-Verification-of-Conformity.pdf\"\u003e\u003cspan\u003eUL 1741 CRD PCS Test Verification Of Conformity Security:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/08\/EG4-FlexBOSS21-FlexBOSS18-UL-3141-CRD-PCS-Verification-of-Conformity.pdf\"\u003e\u003cspan\u003eUL3141 Certificate:\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EG4","offers":[{"title":"1x EG4 FlexBOSS21 + 1x 314Ah Indoor","offer_id":50654205182199,"sku":"K0210","price":7445.0,"currency_code":"USD","in_stock":true},{"title":"1x EG4 FlexBOSS21 + 2x 314Ah Indoor","offer_id":50654205214967,"sku":"K0211","price":11460.0,"currency_code":"USD","in_stock":true},{"title":"1x EG4 FlexBOSS21 + 3x 314Ah Indoor","offer_id":50654205247735,"sku":"K0212","price":15475.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/1868\/3895\/files\/1EG4314AhIndoor_Flexboss21_ESS.png?v=1775064494","url":"https:\/\/northgridsupply.com\/products\/eg4-314ah-indoor-flexboss21-ess","provider":"Northgrid Supply","version":"1.0","type":"link"}